Keep in mind that as you prune and pick, you can leave the plant material on the ground so to amend the soil when it breaks down. Try to make sure you add as much organic matter to the soil as possible.

Get a soil analysis done to find out what the level of organic matter is, what the soil pH is, what the CEC is, and what nutrients you have and which ones you lack. Without some of the basics, you're approaching this blindly. EM•1® can help, but even EM•1® needs some basic nutrients to live too.